JP5528166B2 - Coaxial cable connector - Google Patents

Description

  The present invention relates to a coaxial cable connector that is attached to an end of a coaxial cable and connects the coaxial cable to a coaxial connector such as a television terminal.

  Conventionally, television terminals installed on the walls of buildings and antenna terminals provided on various receivers have F-type plugs that are coaxial and project on the outer conductor side and are threaded on the outer peripheral surface. It is used.

  And as a coaxial cable connector for connecting a coaxial cable to this kind of F-type plug, a cylindrical shape inserted between an insulating member around the core wire of the coaxial cable and an outer conductor around the insulating member Provided on the side opposite the coaxial cable side of the insertion portion, the flange portion that contacts the outer conductor or a covering member around the outer conductor when the insertion portion is inserted into the coaxial cable, and positions the coaxial cable And a fitting portion that can be fitted (externally fitted) to the outer conductor of the F-type plug.

  In addition, the coaxial cable connector has a fitting portion rotatably fixed to the insertion portion, and can be screwed onto the inner peripheral surface of the fitting portion with a thread formed around the outer conductor of the F-type plug. There are two types: a thread formed on the inner peripheral surface of the fitting part and a threaded part not inserted on the inner peripheral surface of the fitting part, and the outer conductor of the F-type plug inserted into the fitting part. Are known.

  Of these, the former can use the thread formed on the outer conductor side of the F-type plug to fix the coaxial cable firmly to the F-type plug. Since it is necessary to rotate a fitting part at the time of mounting | wearing, it could not be used.

  In other words, since the F-type plug used as a TV terminal or antenna terminal protrudes from the outer conductor side, the F-type plug at the installation location (that is, the wall of the building or the housing of the receiving device). A recess may be formed so as not to protrude outward.

  However, in this case, if the space around the F-type plug is small, the fitting portion cannot be rotated when the coaxial cable connector is mounted, and thus the former coaxial cable connector cannot be used.

  On the other hand, the coaxial cable connector in which the outer conductor of the F-type plug is inserted into the fitting portion without forming a screw thread on the inner peripheral surface of the fitting portion, so there is no need to rotate the fitting portion. The structure becomes simple, and even if the F-type plug is provided in the recess, it can be easily attached to the F-type plug.

  However, when this type of coaxial cable connector is attached to the F-type plug, only the outer conductor of the F-type plug is inserted into the fitting portion. It becomes easy to come off by (pull) or the like.

  For this reason, for example, when it is used for connection between a TV terminal and a recording device, a problem such as that the connection has been disconnected at the time of scheduled recording and the recording could not be performed easily occurs, and such a problem may occur. It has been desired to improve reliability so that there is no problem.

  In order to meet this demand, conventionally, a slit is formed on the opening end side of the fitting portion so that the diameter on the opening end side of the fitting portion can be enlarged / reduced. It has been proposed to provide a ring spring around the end side and a slide collar that moves the ring spring in the axial direction of the fitting portion (see, for example, Patent Document 1).

  In addition, according to the proposed coaxial cable connector, the diameter of the opening end side of the fitting portion can be enlarged / reduced, so that the coaxial cable connector is attached to the F-type plug with the opening portion of the fitting portion widened. Then, by reducing the diameter of the opening end of the fitting portion, the coaxial cable connector (and thus the coaxial cable) can be firmly fixed to the F-type plug.

JP 2001-297838 A

  However, the proposed coaxial cable connector has a problem that the configuration is complicated because the ring spring and the slide collar are used to enlarge / reduce the diameter of the opening end of the fitting portion.

  Moreover, since the slide collar is merely for moving the ring spring, the slit formed on the opening end side of the fitting portion cannot be electrically shielded, and noise enters through the slit. There was a thing.

  The present invention has been made in view of such problems, and can fix a coaxial cable firmly to an F-type plug such as a TV terminal or an antenna terminal, and has a simple configuration and prevents noise intrusion. An object of the present invention is to provide a coaxial cable connector that can be used.

The invention according to claim 1, which has been made to achieve the object,
In a cylindrical shape, one open end side is formed so as to be connectable to an outer conductor of a coaxial cable, and a cable connecting portion into which the core wire of the coaxial cable or a rod-shaped terminal connected to the core wire can be inserted into the inner space,
A cylindrical plug connection portion provided at the opening end opposite to the outer conductor connection side of the cable connection portion, into which a coaxial plug to be connected can be inserted, and
In the coaxial cable connector in which the cable connection portion and the plug connection portion are made of a conductive metal,
The side wall of the plug connection part is divided into a plurality of slits parallel to the central axis of the plug connection part from the cable connection part side toward the opening end opposite to the cable connection part,
In addition, the plurality of divided side wall portions alternately become the connecting pieces connected to the cable connecting portions around the central axis, or the fitting pieces whose one ends are opened shorter than the connecting pieces. The length in the central axis direction is set as
Around the side wall of the plug connection portion, a cylindrical rotating ring that is rotatable around the central axis is provided so as to cover the slit and the side wall portion divided by the slit,
Depending on the rotational position of the rotating ring, the inner peripheral surface of the rotating ring is brought into contact with the fitting piece to displace the fitting piece from a steady position to the inside of the plug connection portion, or the fitting A convex part is formed that can be switched to return to the steady position by removing the fitting piece from the piece ,
The opening on the side opposite to the cable connection portion of the plug connection portion is larger than the outer periphery of the side wall formed by each piece so as to hold the rotating ring between the cable connection portion. It is formed in a diameter .

Next, according to a second aspect of the present invention, in the coaxial cable connector according to the first aspect of the present invention, the opening of the rotating ring in the opening of the tangential connection portion opposite to the cable connection portion or in the cable connection portion. A protruding portion of the rotating ring is brought into contact with the fitting piece at the opening end of the rotating ring facing the opposite portion and the opening portion of the rotating ring facing the facing portion, and the fitting piece is connected to the plug connection portion. One or a plurality of pairs of concave / convex portions that are engaged with each other at a fixed position to be displaced inward and position the rotary ring at the fixed position are formed.

Further, the invention according to claim 3 is the coaxial cable connector according to claim 1 or 2 , wherein the screw formed on the outer peripheral surface of the coaxial plug is at the open end of the fitting piece. A claw portion engageable with the mountain is formed.

  The side wall of the plug connection portion is divided into a plurality of slits parallel to the central axis of the plug connection portion from the cable connection portion side toward the opening end opposite to the cable connection portion. The plurality of divided side wall portions are alternately connected around the central axis so as to be a connecting piece connected to the cable connecting portion or a fitting piece whose one end is opened shorter than the connecting piece. A length in the axial direction is set.

  In addition, a cylindrical rotating ring that can rotate around the central axis is provided around the side wall of the connector connection portion so as to cover the slit and the side wall portion divided by the slit. On the peripheral surface, depending on the rotational position of the rotating ring, the fitting piece is brought into contact with the fitting piece to be displaced from the steady position to the inside of the plug connection portion, or the fitting piece is removed from the fitting piece. A convex portion is formed that can switch whether to return to the steady position.

  For this reason, according to the coaxial cable connector of the present invention, by rotating the rotating ring, the fitting piece of the splice connection portion is displaced inward, or more than the position where the fitting piece is displaced inward. It is possible to switch to the outer steady position.

  Therefore, with the fitting piece of the plug connection part in the steady position, insert the coaxial plug into the plug connection part, and then rotate the rotating ring to plug the fitting piece of the plug connection part. If it is displaced to the inside of the connecting portion, the fitting piece is brought into contact (pressed) with the outer peripheral surface of the coaxial plug, and the coaxial cable connector (and thus the coaxial cable connected to the coaxial cable connector) is It can be firmly fixed to the coaxial plug.

  In addition, a slit is formed in the plug connection part, but since a rotating ring is provided around it, if the rotating ring is made of conductive metal, noise can be prevented from entering through this slit. can do.

  Further, according to the coaxial cable connector of the present invention, the opening on the side opposite to the cable connection portion of the plug connection portion is formed in each piece so as to hold the rotating ring between the cable connection portion. The diameter is larger than the outer periphery of the side wall.

  Therefore, according to the coaxial cable connector of the present invention, the rotating ring is prevented from moving in the central axis direction around the plug connection portion, and the convex portion formed on the inner peripheral surface of the rotating ring is always provided. The fitting piece can be appropriately displaced by rotating the rotating ring by arranging the fitting piece at an appropriate position suitable for displacing the fitting piece.

  Next, according to the coaxial cable connector of the second aspect, the opening portion of the tangential connection portion opposite to the cable connection portion or the facing portion facing the opening end of the rotating ring in the cable connecting portion, and this facing One or a plurality of engaging portions that are engaged with each other at a fixed position at which the convex portion of the rotating ring comes into contact with the fitting piece and displaces the fitting piece to the inside of the plug connection portion. A pair of concave / convex portions is formed.

  Therefore, according to the coaxial cable connector of the second aspect, the user can easily find a fixing position where the coaxial cable connector can be fixed to the coaxial connector while rotating the rotating ring. Thus, the operability when the coaxial cable connector is fixed to the coaxial connector can be improved.

  Next, according to the coaxial cable connector of the third aspect, the claw portion that can be engaged with the screw thread formed on the outer peripheral surface of the coaxial plug is formed at the open end of the fitting piece. For this reason, if the coaxial plug is inserted into the plug connection portion as described above, the rotating ring is rotated, and the fitting piece of the plug connection portion is displaced to the inside of the plug connection portion. Not only can the piece be brought into contact with the outer peripheral surface of the coaxial plug, but also the claw portion formed at the open end of the fitting piece can be engaged with the thread formed on the coaxial plug.

  Therefore, according to the coaxial cable connector of the third aspect, when the coaxial cable connector is attached to the coaxial connector, the coaxial cable connector is prevented from being detached from the coaxial connector, and the coaxial cable is connected to the coaxial connector. Can be fixed more firmly.

  In addition, although the nail | claw part formed in each fitting piece may be comprised so that a ring may be formed around the central axis of a plug connection part, the shape of the thread formed on the outer peripheral surface of a coaxial plug Corresponding to the above, a spiral may be formed around the central axis of the plug connection portion.

  And if it does in this way, all the nail | claw parts formed in each fitting piece will be engaged with the screw thread of a coaxial plug in the state which made the center axis | shaft of a plug connection part and a coaxial plug correspond. Thus, the coaxial cable connector can be more reliably prevented from coming off from the coaxial connector.

It is a perspective view showing the appearance of the coaxial cable connector of an embodiment. It is a perspective view showing the state which decomposed | disassembled the coaxial cable connector. It is sectional drawing explaining the internal structure of a coaxial cable connector, and its operation | movement. It is a side view showing the modification of a coaxial cable connector.

Embodiments of the present invention will be described below with reference to the drawings.
The coaxial cable connector 1 of the present embodiment is for connecting a coaxial cable 4 to an F-type plug 2 constituting a television terminal, an antenna terminal, etc. (FIGS. 3A-1 and 3B-1). 1, 2, a cable connection portion 10 for connecting the coaxial cable 4, a plug connection portion 20 for connecting the F-type plug 2, and the plug connection portion 20. And a cylindrical rotating ring 30 that is rotatably provided around the periphery.

  Among these, the cable connecting portion 10 includes an insulating member 6 around the core wire 5 of the coaxial cable 4 and an external conductor 7 around the insulating member 6 as shown in FIGS. 3 (a-1) and 3 (b-1). The cylindrical insertion part 12 connected to the outer conductor of the coaxial cable 4 is provided.

  The outer conductor 7 of the coaxial cable 4 or the covering member 8 around the outer conductor 7 is brought into contact with the insertion portion 12 when the insertion portion 12 is inserted into the coaxial cable 4 on the side opposite to the cable insertion side. Thus, a flange portion 14 for positioning the insertion portion 12 (and thus the cable connection portion 10) at the tip of the coaxial cable 4 is provided.

  The flange portion 14 is formed in an annular shape having an inner diameter substantially the same as the outer diameter of the opening end of the insertion portion 12, and is fixed to the distal end of the insertion portion 12 by fitting the opening end of the insertion portion 12 into the hollow portion. ing. Further, a connecting hole 16 for connecting the plug connecting portion 20 and the cable connecting portion 10 is fitted around the central axis by fitting a connecting piece 24 of the plug connecting portion 20 described later into the collar portion 14. A plurality of (four in this embodiment) are formed at substantially equal intervals.

  In addition, the insertion part 12 and the collar part 14 which comprise the cable connection part 10 are formed with the electroconductive metal (for example, C3604B). The plug connection portion 20 is also formed of the same conductive metal as the cable connection portion 10.

  Next, the plug connection portion 20 has a cylindrical shape having an inner diameter through which the F-type plug 2 can be inserted, and the opening 28 on the opposite side to the cable connection portion 10 has an annular shape. The side wall from the opening 28 to the cable connecting portion 10 side forms a plurality (eight) slits parallel to the central axis of the plug connecting portion 20 from the cable connecting portion 10 side to the opening 28. Thus, the cylindrical side wall is divided into a plurality (eight) around the central axis.

  And the side wall part divided | segmented into plurality is the connection piece 24 connected with the collar part 14 of the cable connection part 10 by turns around the center axis | shaft of the plug connection part 20, and the front-end | tip is shorter than this connection piece 24. The length in the central axis direction is set so that the fitting piece 26 is opened.

  Here, the connecting piece 24 is for fixing the plug connecting portion 20 to the cable connecting portion 10 by fitting the tip of the connecting piece 24 into the connecting hole 16 of the flange portion 14. Similarly to the above, a plurality (four in this embodiment) are formed at substantially equal intervals around the central axis of the plug connection portion 20.

  Further, the fitting piece 26 is pressed toward the inside of the plug connection portion 20 by the rotation of the rotating ring 30 described later, and the F-type plug 2 inserted from the opening 28 side of the plug connection portion 20 is inserted. This is for fixing the F-type plug 2 in the plug connection portion 20 by being brought into contact with the side wall.

A claw portion 27 that engages with a thread formed on the outer peripheral surface of the F-type plug 2 to prevent the plug connection portion 20 from coming off is formed at the tip of the fitting piece 26. .
Next, the rotating ring 30 has a cylindrical shape having a diameter larger than that of the side wall portion (the coupling piece 24 and the fitting piece 26) of the plug connection portion 20, and the central axis of the side wall portion is provided around the side wall portion. It is provided to be rotatable around.

  Then, on the inner peripheral surface of the rotating ring 30, depending on the rotational position of the rotating ring 30, the fitting piece 26 is brought into contact with the fitting piece 26 to be displaced from the steady position to the inside of the plug connection portion 20. A convex portion 32 is formed that can be switched between being released from the mating piece 26 and returning the fitting piece 26 to the steady position.

  It should be noted that the opening portion 28 of the plug connection portion 20 has an outer diameter so that the rotation ring 30 is sandwiched between the opening portion 28 of the cable connection portion 10 and the movement of the rotation ring 30 in the central axis direction can be prevented. The outer diameter of the side wall portion on which the connecting piece 24 and the fitting piece 26 are formed is larger.

  When using the coaxial cable connector 1 of the present embodiment configured as described above, first, the tip of the coaxial cable 4 is processed as shown in FIGS. 3 (a-1) and 3 (b-1). That is, in the coaxial cable 4, the core wire 5 protrudes from the distal end of the insulating member 6 by a length substantially corresponding to the length in the central axis direction of the rotating ring 30, and the insulating member 6 includes the covering member 8 and the outer conductor 7. It processes so that it may protrude from the front-end | tip of only the thickness of the center axis direction of the collar part 14. FIG.

  Next, the insertion portion 12 of the coaxial cable connector 1 is inserted between the outer conductor 7 and the insulating member 6 of the coaxial cable 4 processed as described above, and the outer conductor 7 is attached from the periphery thereof with a fixing ring or the like. Fastened and fixed to the insertion portion 12.

As a result, the coaxial cable connector 1 is firmly fixed to the distal end of the coaxial cable 4 and becomes a plug connection terminal in which the core wire 5 of the coaxial cable 4 is surrounded by the plug connection portion 20.
By the way, in the coaxial cable connector 1 of the present embodiment, a plurality of (four) fitting pieces 26 are provided around the central axis of the side wall portion of the plug connection portion 20, and the rotational position of the rotary ring 30 is provided. Thus, the protrusions 32 formed on the inner peripheral surface of the rotating ring 30 are brought into contact with the fitting piece 26, and the fitting piece 26 is moved from the normal position shown in FIG. b-2), or the fitting piece 26 is returned from the fixed position shown in FIG. 3B-2 to the normal position shown in FIG. 3A-2. Can be switched.

  When the fitting piece 26 of the plug connection portion 20 is in the fixed position shown in FIG. 3 (b-2), the tip portion of the fitting piece 26 is displaced to the inside of the plug connection portion 20, The distal end portion is in the way, and the F-type plug 2 cannot be inserted into the plug connection portion 20.

  Therefore, after the coaxial cable connector 1 is attached to the tip of the coaxial cable 4 as described above, when the coaxial cable connector 1 is attached to the F-type plug 2, the rotary ring 30 is rotated so that FIG. As shown in (a-2), the convex portion 32 faces the connecting piece 24 and the fitting piece 26 is set at a normal position not displaced inward. Attach to stopper 2.

  As a result, the core wire 5 of the coaxial cable 4 is connected to the center conductor of the F-type plug 2, and the outer conductor 7 of the coaxial cable 4 is connected to the F-type plug 2 via the cable connection portion 10 and the plug connection portion 20. It will be connected to the outer conductor.

  Also, since the coaxial cable connector 1 can be easily detached from the F-type plug 2 simply by attaching the coaxial cable connector 1 to the F-type plug 2, the rotation after the installation to the F-type plug 2 is possible. By rotating the ring 30, as shown in FIG. 3 (b-2), the convex portion 32 comes into contact with the fitting piece 26 and the fitting piece 26 is displaced inside the plug connection portion 20. Set to position.

  As a result, the fitting piece 26 is brought into contact with the outer peripheral surface of the F-type plug 2, and the claw portion 27 formed at the tip of the fitting piece 26 is formed on the outer peripheral surface of the F-type plug 2. It will enter the valley part of the tapped thread (not shown) and will hold the plug connection part 20 firmly in the F-type plug 2 so that the coaxial cable connector 1 can be disconnected from the F-type plug 2. This can be prevented (see FIGS. 3A-2 and 3B-2).

  In addition, since the rotation ring 30 is for displacing the fitting piece 26 by the convex part 32 formed in the internal peripheral surface, you may form it with a synthetic resin. If the rotating ring 30 is made conductive by forming the rotating ring 30 with a conductive metal or by plating the surface of the rotating ring 30 made of synthetic resin with a conductive metal, the slit 22 of the plug connection portion 20 is provided. It is possible to prevent noise from entering the coaxial cable connector 1 through the cable.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various aspect can be taken in the range which does not deviate from the summary of this invention.
For example, as shown in FIG. 4, the rotating ring 30 side end surface for holding the rotating ring 30 with the flange 14 in the opening 28 of the plug connection portion 20, and the opening 28 side of the rotating ring 30 Engaging convex portions 29 and engaging concave portions 34 for positioning the rotating ring 30 at the fixed position by engaging the rotating rings 30 with each other at the fixed position shown in FIG. May be provided.

  In this way, the user can easily find a fixing position where the coaxial cable connector 1 can be fixed to the F-type plug 2 while rotating the rotary ring 30. The operability when fixing the cable connector 1 to the F-type plug 2 can be improved.

In addition, you may make it provide multiple pairs of the engagement convex part 29 and the engagement recessed part 34 in the opening part 28 of the plug connection part 20, and the opening end of the rotating ring 30, respectively.
In addition, the engaging convex portion 29 and the engaging concave portion 34 are not the opening portion 28 of the plug connection portion 20, but the end surface on the rotating ring 30 side of the flange portion 14 of the cable connecting portion 10, and the opening end of the rotating ring 30. In addition, a pair or a plurality of pairs may be provided on the opening end surface of the rotating ring 30 on the flange 14 side.

  Next, the claw portion 27 formed on each fitting piece 26 of the plug connection portion 20 may be configured to form a ring around the central axis of the plug connection portion 20, but the F-type connection Corresponding to the shape of the thread formed on the outer peripheral surface of the plug 2, a spiral may be formed around the central axis of the plug connection portion 20.

  And if it does in this way, all the nail | claw parts 27 formed in each fitting piece 26 will be in the state which made the center axis | shaft of the plug connection part 20 and the F-type plug 2 correspond. The coaxial cable connector 1 can be more reliably prevented from detaching from the F-type plug 2.

  Moreover, the user rotates the rotating ring 30 by forming unevenness for preventing slippage on the outer peripheral surface of the rotating ring 30 or providing a ring cover made of synthetic resin (for example, soft PVC). You may make it improve the operativity at the time.

  DESCRIPTION OF SYMBOLS 1 ... Coaxial cable connector, 2 ... F type plug, 4 ... Coaxial cable, 5 ... Core wire, 6 ... Insulating member, 7 ... External conductor, 8 ... Cover member, 10 ... Cable connection part, 12 ... Insertion part, 14 ...鍔 part, 16 ... connection hole, 20 ... plug connection part, 22 ... slit, 24 ... connection piece, 26 ... fitting piece, 27 ... claw part, 28 ... opening part, 29 ... engagement convex part, 30 ... rotation Ring, 32 ... convex part, 34 ... engagement concave part.

Claims (3)

In a cylindrical shape, one open end side is formed so as to be connectable to an outer conductor of a coaxial cable, and a cable connecting portion into which the core wire of the coaxial cable or a rod-shaped terminal connected to the core wire can be inserted into the inner space,
A cylindrical plug connection portion provided at the opening end opposite to the outer conductor connection side of the cable connection portion, into which a coaxial plug to be connected can be inserted, and
In the coaxial cable connector in which the cable connection portion and the plug connection portion are made of a conductive metal,
A plurality of slits parallel to the central axis of the plug connection part are formed on the side wall of the plug connection part from the cable connection part side toward the opening end opposite to the cable connection part,
The side wall of the plug connection part is divided into a plurality of slits parallel to the central axis of the plug connection part from the cable connection part side toward the opening end opposite to the cable connection part,
In addition, the plurality of divided side wall portions alternately become the connecting pieces connected to the cable connecting portions around the central axis, or the fitting pieces whose one ends are opened shorter than the connecting pieces. The length in the central axis direction is set as
Around the side wall of the plug connection portion, a cylindrical rotating ring that is rotatable around the central axis is provided so as to cover the slit and the side wall portion divided by the slit,
Depending on the rotational position of the rotating ring, the inner peripheral surface of the rotating ring is brought into contact with the fitting piece to displace the fitting piece from a steady position to the inside of the plug connection portion, or the fitting A convex part is formed that can be switched to return to the steady position by removing the fitting piece from the piece ,
The opening on the side opposite to the cable connection portion of the plug connection portion is larger than the outer periphery of the side wall formed by each piece so as to hold the rotating ring between the cable connection portion. A coaxial cable connector having a diameter . In the opening on the opposite side of the cable connection part of the tangent connection part or in the cable connection part facing the opening end of the rotating ring, and in the opening end of the rotating ring facing the facing part The convex portions of the rotating ring are brought into contact with the fitting piece and engaged with each other at a fixed position for displacing the fitting piece to the inside of the plug connection portion, and the rotating ring is positioned at the fixed position. The coaxial cable connector according to claim 1, wherein one or a plurality of pairs of concave and convex portions are formed. The claw part which can be engaged with the screw thread formed in the outer peripheral surface of the said coaxial plug is formed in the open end of the said fitting piece, The Claim 1 or Claim 2 characterized by the above-mentioned. Coaxial cable connector.

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